disable Transfer button when unavailable
remove reference to System.Data and System.Deployment
fix exception/crash in multiple revision loading
support hosted local wiki data

Also make local wiki data keys case-insensitive.
miscellaneous fixes and tweaks
improve compatibility with Mono

- work around truncation of bottom of CoolCat
- delete btn(Parent|Sub)Cat for now: although invisible, they affected
  Mono's AutoSize algorithms
- disable category auto-complete (causes hangs)
- manually set ContentLength on HTTP requests
- add some custom resizing support for Mono (seems to have trouble with
  AutoSize when the window shrinks, and trouble with bottom/right Anchors
  for controls that are initially invisible)
- default to HTTPS off (users can still enable it, but it doesn't work)
high DPI fix for CoolCat
support protocol-relative URIs in hosted local wiki data
success message string fix; misc. stuff
restore something that got deleted
tab order cleanup